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Detection of gingip...
Detection of gingipain activity using solid state nanopore sensors
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- Palomar, Quentin, 1991- (författare)
- Uppsala universitet,Fasta tillståndets elektronik,Uppsala Univ, Sweden
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- Svärd, Anna, 1985- (författare)
- Linköpings universitet,Örebro universitet,Institutionen för medicinska vetenskaper,Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden; Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden,Biofysik och bioteknik,Tekniska fakulteten,Orebro Univ, Sweden
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- Zeng, Shuangshuang (författare)
- Uppsala universitet,Fasta tillståndets elektronik,Uppsala Univ, Sweden
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- Hu, Qitao (författare)
- Uppsala universitet,Fasta tillståndets elektronik,Uppsala Univ, Sweden
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- Liu, Funing (författare)
- Uppsala universitet,Fasta tillståndets elektronik,Uppsala Univ, Sweden
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- Aili, Daniel (författare)
- Cardiovascular Research Centre (CVRC), School of Medical Sciences, Örebro University, Örebro, Sweden,Orebro Univ, Sweden
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- Zhang, Zhen, 1979- (författare)
- Uppsala universitet,Fasta tillståndets elektronik,Uppsala Univ, Sweden
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Sensors and actuators. B, Chemical. - : Elsevier. - 0925-4005 .- 1873-3077. ; 368
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Accurate, robust, and rapid diagnostics is the basis for all well-functioning healthcare. There is a large need in point-of-care biosensors to facilitate diagnosis and reduce the need for cumbersome laboratory equipment. Proteases are key virulence factors in periodontitis. Periodontal disease is very common and characterized by inflammation and infection in the tooth-supporting structures and is linked to many systemic diseases such as cardiovascular disease, diabetes, and Alzheimer's disease. Proteases present in periodontal disease, gingipains, are highly responsible for the disease onset and progression and are therefore a promising biomarker. Here we show a novel nanopore-based biosensor strategy for protease activity monitoring. Solid-state nanopores were modified with a proteolytic substrate, restricting the ionic current through the apertures of the nanopores. Protease can digest the proteolytic substrate thus enlarge the aperture and the ionic current. Trypsin was used as an initial model protease to investigate the performance of the sensor. We show that the solid-state nanoporebiosensor can detect trypsin with a limit of detection (LOD) of 0.005 ng/mL (0.2 pM). The detection system developed for the model enzyme was then applied to the detection of gingipains. The LOD for detection of gingipains was 1 ng/mL (0.02 nM), with a 27% recovery of the signal at 0.1 mu g/mL, indicating that the sensitivity and dynamic range are relevant for the clinical diagnosis of periodontitis. The generic detection of protease activity and high sensitivity make this a promising sensor technology for both diagnosis of periodontal disease and monitoring of other disease-related proteases.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Biomedicinsk laboratorievetenskap/teknologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Biomedical Laboratory Science/Technology (hsv//eng)
Nyckelord
- Biosensor
- Solid-state nanopore
- Pore blocking
- Pore opening
- Trypsin
- Enzyme detection
- Gingipains
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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